Malicious PDF — malware analysis report

Static analysis result for SHA-256 94e94579ea99c5f1…

MALICIOUS

PDF

34.1 KB Created: 2021-07-09 02:54:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 844f7c99873628b3ae954e04d67f490c SHA-1: a95bcbc542bd172aaeb33fedd9d319d866b71fa0 SHA-256: 94e94579ea99c5f1620f391c9fbe7987974d4935f38bbbcc5ec7ecda5d3809bc
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/431946152/claim-gg-free-robux-game-hack PDF link annotation
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-giver-2021_GM431946152.pdfPDF link annotation
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-hack-deutsch-pc-weg-machen_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/get-free-robux_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-cheats-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/are-roblox-hack-clients-a-thing_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-working-roblox-cards_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-cheating-sex_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-hack-any-roblox-acount_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-hacks-download-android_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/robux-and-tix-hack_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-robux-in-roblox-for-free-on-pc_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-hack_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-today-dot-com_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/play-games-for-robux_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/video-free-robux-obby_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/is-tiktok-pro-free_GM835599320.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/jailbreak-robloxcom-cheats_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3046 21804 bytes
SHA-256: bd4e364b2cced27fbde674b9afd0087b3c7e563227c3a9136c9a8b666a6bca24
font_01_sfnt_off0000600a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x600A 19168 bytes
SHA-256: 2362c95d5f9c36a69ccc9bb0a02a2e14dff77a2a21d49e742691bac5a89e0773

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